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question no 9 and 10 please answer ...............................

question no 9 and 10 please answer ...............................

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Grade:12th pass

1 Answers

Arun
25750 Points
5 years ago
Dear student
 
coefficient ofx^k = 
 
= kC k + (k+1)C k + (k+2)C k +......... nC k
 
nowuse uppe index variable and solve it

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